Accurate electromagnetic analysis of transmission line structures with finite-thickness conductors

Accurate electromagnetic (EM) analysis is performed for transmission line structures with finite-thickness conductors. Traditionally, the analysis ignores the thickness of conductors to simplify the model but such an ignorance may not be allowed in many applications. In this paper, a rigorous three-dimensional (3D) model without any geometric approximation is established and the method of moment (MoM) with the Rao-Wilton-Glisson (RWG) basis function is applied to the analysis. To enhance the accuracy of solutions, a robust singularity treatment technique is adopted to evaluate singular matrix elements and good results have been seen from a demonstrated numerical example.